Definition of Irritation

1.n. The act of irritating, or exciting, or the state of being irritated; excitement; stimulation, usually of an undue and uncomfortable kind; especially, excitement of anger or passion; provocation; annoyance; anger.

Definition of Irritation

1. Noun. The act of irritating, or exciting, or the state of being irritated; excitement; stimulation, usually of an undue and uncomfortable kind; especially, excitement of anger or passion; provocation; annoyance; anger. ¹

2. Noun. The act of exciting, or the condition of being excited to action, by stimulation; -- as, the condition of an organ of sense, when its nerve is affected by some external body; esp., the act of exciting muscle fibers to contraction, by artificial stimulation; as, the irritation of a motor nerve by electricity; also, the condition of a muscle and nerve, under such stimulation. ¹

3. Noun. A condition of morbid excitability or oversensitiveness of an organ or part of the body; a state in which the application of ordinary stimuli produces pain or excessive or vitiated action. ¹

¹ Source: wiktionary.com

Definition of Irritation

1. [n -S]

Medical Definition of Irritation

1.
A state of overexcitation and undue sensitivity.
Origin: L. Irritatio
This entry appears with permission from the Dictionary of Cell and Molecular Biology
(11 Mar 2008)

Irritation Pictures

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Literary usage of Irritation

Below you will find example usage of this term as found in modern and/or classical literature:

1.The American Journal of the Medical Sciences by Southern Society for Clinical Investigation (U.S.) (1907)"The cardio- inhibitory curves were set up especially by irritation near root of
lungs. ... Trocar irritation of right visceral pleura was followed by slight ..."

2.Journal of Nervous and Mental Disease by American Neurological Association, Philadelphia Neurological Society, Chicago Neurological Society, New York Neurological Association, Boston Society of Psychiatry and Neurology (1885)"He has not studied the effects upon the movements on the opposite side, but those
on the same side as the irritation. All the experiments were made upon ..."

3.The Encyclopaedia Britannica: A Dictionary of Arts, Sciences, and General by Thomas Spencer Baynes (1888)"... *c- ; contraction of the pupil under the Influence of light on the retina^
winking, from irritation of the seniory nerves of the conjunctiva ; sneezing, ..."

5.Nature by Nature Publishing Group, Norman Lockyer (1883)"Further investigations still, showed that both chemical and electrical irritation
would excite the inhibitory apparatus, and he, therefore, considered that ..."

6.Medical Record by George Frederick Shrady, Thomas Lathrop Stedman (1889)"The irritation arises often suddenly, sometimes gradually, to a degree sufficient
to cause ... This maximum of irritation lasts for days, and even weeks, ..."

7.Journal of Nervous and Mental Disease by Philadelphia Neurological Society, American Neurological Association, Chicago Neurological Society, New York Neurological Association (1884)"The strength of the contraction caused by irritation of the hypoglossus is at
least six times ... Chemical irritation of the lingual had hardly any effect. ..."

8.The American Journal of the Medical Sciences by Southern Society for Clinical Investigation (U.S.) (1907)"The cardio- inhibitory curves were set up especially by irritation near root of
lungs. ... Trocar irritation of right visceral pleura was followed by slight ..."

9.Journal of Nervous and Mental Disease by American Neurological Association, Philadelphia Neurological Society, Chicago Neurological Society, New York Neurological Association, Boston Society of Psychiatry and Neurology (1885)"He has not studied the effects upon the movements on the opposite side, but those
on the same side as the irritation. All the experiments were made upon ..."

10.The Encyclopaedia Britannica: A Dictionary of Arts, Sciences, and General by Thomas Spencer Baynes (1888)"... *c- ; contraction of the pupil under the Influence of light on the retina^
winking, from irritation of the seniory nerves of the conjunctiva ; sneezing, ..."

12.Nature by Nature Publishing Group, Norman Lockyer (1883)"Further investigations still, showed that both chemical and electrical irritation
would excite the inhibitory apparatus, and he, therefore, considered that ..."

13.Medical Record by George Frederick Shrady, Thomas Lathrop Stedman (1889)"The irritation arises often suddenly, sometimes gradually, to a degree sufficient
to cause ... This maximum of irritation lasts for days, and even weeks, ..."

14.Journal of Nervous and Mental Disease by Philadelphia Neurological Society, American Neurological Association, Chicago Neurological Society, New York Neurological Association (1884)"The strength of the contraction caused by irritation of the hypoglossus is at
least six times ... Chemical irritation of the lingual had hardly any effect. ..."